2 * SGI FREE SOFTWARE LICENSE B (Version 2.0, Sept. 18, 2008)
3 * Copyright (C) 1991-2000 Silicon Graphics, Inc. All Rights Reserved.
5 * Permission is hereby granted, free of charge, to any person obtaining a
6 * copy of this software and associated documentation files (the "Software"),
7 * to deal in the Software without restriction, including without limitation
8 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
9 * and/or sell copies of the Software, and to permit persons to whom the
10 * Software is furnished to do so, subject to the following conditions:
12 * The above copyright notice including the dates of first publication and
13 * either this permission notice or a reference to
14 * http://oss.sgi.com/projects/FreeB/
15 * shall be included in all copies or substantial portions of the Software.
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
18 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
20 * SILICON GRAPHICS, INC. BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
21 * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
22 * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
25 * Except as contained in this notice, the name of Silicon Graphics, Inc.
26 * shall not be used in advertising or otherwise to promote the sale, use or
27 * other dealings in this Software without prior written authorization from
28 * Silicon Graphics, Inc.
33 * GLX protocol interface boot-strap code.
35 * Direct rendering support added by Precision Insight, Inc.
37 * \author Kevin E. Martin <kevin@precisioninsight.com>
41 #include "glxclient.h"
42 #include <X11/extensions/Xext.h>
43 #include <X11/extensions/extutil.h>
44 #include <X11/extensions/dri2proto.h>
45 #include "glxextensions.h"
46 #include "glcontextmodes.h"
49 #include <X11/Xlib-xcb.h>
56 void __glXDumpDrawBuffer(__GLXcontext
* ctx
);
60 ** You can set this cell to 1 to force the gl drawing stuff to be
61 ** one command per packet
63 _X_HIDDEN
int __glXDebug
= 0;
65 /* Extension required boiler plate */
67 static char *__glXExtensionName
= GLX_EXTENSION_NAME
;
68 XExtensionInfo
*__glXExtensionInfo
= NULL
;
70 static /* const */ char *error_list
[] = {
76 "GLXBadCurrentWindow",
77 "GLXBadRenderRequest",
79 "GLXUnsupportedPrivateRequest",
82 "GLXBadCurrentDrawable",
87 __glXCloseDisplay(Display
* dpy
, XExtCodes
* codes
)
91 gc
= __glXGetCurrentContext();
92 if (dpy
== gc
->currentDpy
) {
93 __glXSetCurrentContextNull();
97 return XextRemoveDisplay(__glXExtensionInfo
, dpy
);
102 XEXT_GENERATE_ERROR_STRING(__glXErrorString
, __glXExtensionName
,
103 __GLX_NUMBER_ERRORS
, error_list
)
105 __glXWireToEvent(Display
*dpy
, XEvent
*event
, xEvent
*wire
);
107 __glXEventToWire(Display
*dpy
, XEvent
*event
, xEvent
*wire
);
109 static /* const */ XExtensionHooks __glXExtensionHooks
= {
110 NULL
, /* create_gc */
114 NULL
, /* create_font */
115 NULL
, /* free_font */
116 __glXCloseDisplay
, /* close_display */
117 __glXWireToEvent
, /* wire_to_event */
118 __glXEventToWire
, /* event_to_wire */
120 __glXErrorString
, /* error_string */
123 XEXT_GENERATE_FIND_DISPLAY(__glXFindDisplay
, __glXExtensionInfo
,
124 __glXExtensionName
, &__glXExtensionHooks
,
125 __GLX_NUMBER_EVENTS
, NULL
)
128 * GLX events are a bit funky. We don't stuff the X event code into
129 * our user exposed (via XNextEvent) structure. Instead we use the GLX
130 * private event code namespace (and hope it doesn't conflict). Clients
131 * have to know that bit 15 in the event type field means they're getting
132 * a GLX event, and then handle the various sub-event types there, rather
133 * than simply checking the event code and handling it directly.
137 __glXWireToEvent(Display
*dpy
, XEvent
*event
, xEvent
*wire
)
139 XExtDisplayInfo
*info
= __glXFindDisplay(dpy
);
141 XextCheckExtension(dpy
, info
, __glXExtensionName
, False
);
143 switch ((wire
->u
.u
.type
& 0x7f) - info
->codes
->first_event
) {
144 case GLX_PbufferClobber
:
146 GLXPbufferClobberEvent
*aevent
= (GLXPbufferClobberEvent
*)event
;
147 xGLXPbufferClobberEvent
*awire
= (xGLXPbufferClobberEvent
*)wire
;
148 aevent
->event_type
= awire
->type
;
149 aevent
->serial
= awire
->sequenceNumber
;
150 aevent
->event_type
= awire
->event_type
;
151 aevent
->draw_type
= awire
->draw_type
;
152 aevent
->drawable
= awire
->drawable
;
153 aevent
->buffer_mask
= awire
->buffer_mask
;
154 aevent
->aux_buffer
= awire
->aux_buffer
;
155 aevent
->x
= awire
->x
;
156 aevent
->y
= awire
->y
;
157 aevent
->width
= awire
->width
;
158 aevent
->height
= awire
->height
;
159 aevent
->count
= awire
->count
;
162 /* No easy symbol to test for this, as GLX_BufferSwapComplete is
163 * defined in the local glx.h header, but the
164 * xGLXBufferSwapComplete typedef is only available in new versions
165 * of the external glxproto.h header, which doesn't have any
166 * testable versioning define.
168 * I'll use the related DRI2 define, in the hope that we won't
169 * receive these events unless we know how to ask for them:
171 #ifdef X_DRI2SwapBuffers
172 case GLX_BufferSwapComplete
:
174 GLXBufferSwapComplete
*aevent
= (GLXBufferSwapComplete
*)event
;
175 xGLXBufferSwapComplete
*awire
= (xGLXBufferSwapComplete
*)wire
;
176 aevent
->event_type
= awire
->event_type
;
177 aevent
->drawable
= awire
->drawable
;
178 aevent
->ust
= ((CARD64
)awire
->ust_hi
<< 32) | awire
->ust_lo
;
179 aevent
->msc
= ((CARD64
)awire
->msc_hi
<< 32) | awire
->msc_lo
;
180 aevent
->sbc
= ((CARD64
)awire
->sbc_hi
<< 32) | awire
->sbc_lo
;
185 /* client doesn't support server event */
192 /* We don't actually support this. It doesn't make sense for clients to
193 * send each other GLX events.
196 __glXEventToWire(Display
*dpy
, XEvent
*event
, xEvent
*wire
)
198 XExtDisplayInfo
*info
= __glXFindDisplay(dpy
);
200 XextCheckExtension(dpy
, info
, __glXExtensionName
, False
);
202 switch (event
->type
) {
207 case GLX_EXCHANGE_COMPLETE_INTEL
:
209 case GLX_COPY_COMPLETE_INTEL
:
211 case GLX_FLIP_COMPLETE_INTEL
:
214 /* client doesn't support server event */
221 /************************************************************************/
223 ** Free the per screen configs data as well as the array of
224 ** __glXScreenConfigs.
227 FreeScreenConfigs(__GLXdisplayPrivate
* priv
)
229 __GLXscreenConfigs
*psc
;
232 /* Free screen configuration information */
233 psc
= priv
->screenConfigs
;
234 screens
= ScreenCount(priv
->dpy
);
235 for (i
= 0; i
< screens
; i
++, psc
++) {
237 _gl_context_modes_destroy(psc
->configs
);
238 if (psc
->effectiveGLXexts
)
239 Xfree(psc
->effectiveGLXexts
);
240 psc
->configs
= NULL
; /* NOTE: just for paranoia */
243 _gl_context_modes_destroy(psc
->visuals
);
244 psc
->visuals
= NULL
; /* NOTE: just for paranoia */
246 Xfree((char *) psc
->serverGLXexts
);
248 #ifdef GLX_DIRECT_RENDERING
249 if (psc
->driver_configs
) {
251 for (j
= 0; psc
->driver_configs
[j
]; j
++)
252 free((__DRIconfig
*) psc
->driver_configs
[j
]);
253 free(psc
->driver_configs
);
254 psc
->driver_configs
= NULL
;
256 if (psc
->driScreen
) {
257 psc
->driScreen
->destroyScreen(psc
);
258 __glxHashDestroy(psc
->drawHash
);
259 XFree(psc
->driScreen
);
260 psc
->driScreen
= NULL
;
264 XFree((char *) priv
->screenConfigs
);
265 priv
->screenConfigs
= NULL
;
269 ** Release the private memory referred to in a display private
270 ** structure. The caller will free the extension structure.
273 __glXFreeDisplayPrivate(XExtData
* extension
)
275 __GLXdisplayPrivate
*priv
;
277 priv
= (__GLXdisplayPrivate
*) extension
->private_data
;
278 FreeScreenConfigs(priv
);
279 if (priv
->serverGLXvendor
) {
280 Xfree((char *) priv
->serverGLXvendor
);
281 priv
->serverGLXvendor
= 0x0; /* to protect against double free's */
283 if (priv
->serverGLXversion
) {
284 Xfree((char *) priv
->serverGLXversion
);
285 priv
->serverGLXversion
= 0x0; /* to protect against double free's */
288 #ifdef GLX_DIRECT_RENDERING
289 /* Free the direct rendering per display data */
290 if (priv
->driswDisplay
)
291 (*priv
->driswDisplay
->destroyDisplay
) (priv
->driswDisplay
);
292 priv
->driswDisplay
= NULL
;
294 if (priv
->driDisplay
)
295 (*priv
->driDisplay
->destroyDisplay
) (priv
->driDisplay
);
296 priv
->driDisplay
= NULL
;
298 if (priv
->dri2Display
)
299 (*priv
->dri2Display
->destroyDisplay
) (priv
->dri2Display
);
300 priv
->dri2Display
= NULL
;
303 Xfree((char *) priv
);
307 /************************************************************************/
310 ** Query the version of the GLX extension. This procedure works even if
311 ** the client extension is not completely set up.
314 QueryVersion(Display
* dpy
, int opcode
, int *major
, int *minor
)
317 xcb_connection_t
*c
= XGetXCBConnection(dpy
);
318 xcb_glx_query_version_reply_t
*reply
= xcb_glx_query_version_reply(c
,
319 xcb_glx_query_version
325 if (reply
->major_version
!= GLX_MAJOR_VERSION
) {
329 *major
= reply
->major_version
;
330 *minor
= min(reply
->minor_version
, GLX_MINOR_VERSION
);
334 xGLXQueryVersionReq
*req
;
335 xGLXQueryVersionReply reply
;
337 /* Send the glXQueryVersion request */
339 GetReq(GLXQueryVersion
, req
);
340 req
->reqType
= opcode
;
341 req
->glxCode
= X_GLXQueryVersion
;
342 req
->majorVersion
= GLX_MAJOR_VERSION
;
343 req
->minorVersion
= GLX_MINOR_VERSION
;
344 _XReply(dpy
, (xReply
*) & reply
, 0, False
);
348 if (reply
.majorVersion
!= GLX_MAJOR_VERSION
) {
350 ** The server does not support the same major release as this
355 *major
= reply
.majorVersion
;
356 *minor
= min(reply
.minorVersion
, GLX_MINOR_VERSION
);
363 __glXInitializeVisualConfigFromTags(__GLcontextModes
* config
, int count
,
364 const INT32
* bp
, Bool tagged_only
,
365 Bool fbconfig_style_tags
)
370 /* Copy in the first set of properties */
371 config
->visualID
= *bp
++;
373 config
->visualType
= _gl_convert_from_x_visual_type(*bp
++);
375 config
->rgbMode
= *bp
++;
377 config
->redBits
= *bp
++;
378 config
->greenBits
= *bp
++;
379 config
->blueBits
= *bp
++;
380 config
->alphaBits
= *bp
++;
381 config
->accumRedBits
= *bp
++;
382 config
->accumGreenBits
= *bp
++;
383 config
->accumBlueBits
= *bp
++;
384 config
->accumAlphaBits
= *bp
++;
386 config
->doubleBufferMode
= *bp
++;
387 config
->stereoMode
= *bp
++;
389 config
->rgbBits
= *bp
++;
390 config
->depthBits
= *bp
++;
391 config
->stencilBits
= *bp
++;
392 config
->numAuxBuffers
= *bp
++;
393 config
->level
= *bp
++;
395 count
-= __GLX_MIN_CONFIG_PROPS
;
399 ** Additional properties may be in a list at the end
400 ** of the reply. They are in pairs of property type
401 ** and property value.
404 #define FETCH_OR_SET(tag) \
405 config-> tag = ( fbconfig_style_tags ) ? *bp++ : 1
407 for (i
= 0; i
< count
; i
+= 2) {
410 FETCH_OR_SET(rgbMode
);
412 case GLX_BUFFER_SIZE
:
413 config
->rgbBits
= *bp
++;
416 config
->level
= *bp
++;
418 case GLX_DOUBLEBUFFER
:
419 FETCH_OR_SET(doubleBufferMode
);
422 FETCH_OR_SET(stereoMode
);
424 case GLX_AUX_BUFFERS
:
425 config
->numAuxBuffers
= *bp
++;
428 config
->redBits
= *bp
++;
431 config
->greenBits
= *bp
++;
434 config
->blueBits
= *bp
++;
437 config
->alphaBits
= *bp
++;
440 config
->depthBits
= *bp
++;
442 case GLX_STENCIL_SIZE
:
443 config
->stencilBits
= *bp
++;
445 case GLX_ACCUM_RED_SIZE
:
446 config
->accumRedBits
= *bp
++;
448 case GLX_ACCUM_GREEN_SIZE
:
449 config
->accumGreenBits
= *bp
++;
451 case GLX_ACCUM_BLUE_SIZE
:
452 config
->accumBlueBits
= *bp
++;
454 case GLX_ACCUM_ALPHA_SIZE
:
455 config
->accumAlphaBits
= *bp
++;
457 case GLX_VISUAL_CAVEAT_EXT
:
458 config
->visualRating
= *bp
++;
460 case GLX_X_VISUAL_TYPE
:
461 config
->visualType
= *bp
++;
463 case GLX_TRANSPARENT_TYPE
:
464 config
->transparentPixel
= *bp
++;
466 case GLX_TRANSPARENT_INDEX_VALUE
:
467 config
->transparentIndex
= *bp
++;
469 case GLX_TRANSPARENT_RED_VALUE
:
470 config
->transparentRed
= *bp
++;
472 case GLX_TRANSPARENT_GREEN_VALUE
:
473 config
->transparentGreen
= *bp
++;
475 case GLX_TRANSPARENT_BLUE_VALUE
:
476 config
->transparentBlue
= *bp
++;
478 case GLX_TRANSPARENT_ALPHA_VALUE
:
479 config
->transparentAlpha
= *bp
++;
482 config
->visualID
= *bp
++;
484 case GLX_DRAWABLE_TYPE
:
485 config
->drawableType
= *bp
++;
487 case GLX_RENDER_TYPE
:
488 config
->renderType
= *bp
++;
490 case GLX_X_RENDERABLE
:
491 config
->xRenderable
= *bp
++;
493 case GLX_FBCONFIG_ID
:
494 config
->fbconfigID
= *bp
++;
496 case GLX_MAX_PBUFFER_WIDTH
:
497 config
->maxPbufferWidth
= *bp
++;
499 case GLX_MAX_PBUFFER_HEIGHT
:
500 config
->maxPbufferHeight
= *bp
++;
502 case GLX_MAX_PBUFFER_PIXELS
:
503 config
->maxPbufferPixels
= *bp
++;
505 case GLX_OPTIMAL_PBUFFER_WIDTH_SGIX
:
506 config
->optimalPbufferWidth
= *bp
++;
508 case GLX_OPTIMAL_PBUFFER_HEIGHT_SGIX
:
509 config
->optimalPbufferHeight
= *bp
++;
511 case GLX_VISUAL_SELECT_GROUP_SGIX
:
512 config
->visualSelectGroup
= *bp
++;
514 case GLX_SWAP_METHOD_OML
:
515 config
->swapMethod
= *bp
++;
517 case GLX_SAMPLE_BUFFERS_SGIS
:
518 config
->sampleBuffers
= *bp
++;
520 case GLX_SAMPLES_SGIS
:
521 config
->samples
= *bp
++;
523 case GLX_BIND_TO_TEXTURE_RGB_EXT
:
524 config
->bindToTextureRgb
= *bp
++;
526 case GLX_BIND_TO_TEXTURE_RGBA_EXT
:
527 config
->bindToTextureRgba
= *bp
++;
529 case GLX_BIND_TO_MIPMAP_TEXTURE_EXT
:
530 config
->bindToMipmapTexture
= *bp
++;
532 case GLX_BIND_TO_TEXTURE_TARGETS_EXT
:
533 config
->bindToTextureTargets
= *bp
++;
535 case GLX_Y_INVERTED_EXT
:
536 config
->yInverted
= *bp
++;
542 /* Ignore the unrecognized tag's value */
549 (config
->rgbMode
) ? GLX_RGBA_BIT
: GLX_COLOR_INDEX_BIT
;
551 config
->haveAccumBuffer
= ((config
->accumRedBits
+
552 config
->accumGreenBits
+
553 config
->accumBlueBits
+
554 config
->accumAlphaBits
) > 0);
555 config
->haveDepthBuffer
= (config
->depthBits
> 0);
556 config
->haveStencilBuffer
= (config
->stencilBits
> 0);
559 static __GLcontextModes
*
560 createConfigsFromProperties(Display
* dpy
, int nvisuals
, int nprops
,
561 int screen
, GLboolean tagged_only
)
563 INT32 buf
[__GLX_TOTAL_CONFIG
], *props
;
565 __GLcontextModes
*modes
, *m
;
571 /* FIXME: Is the __GLX_MIN_CONFIG_PROPS test correct for FBconfigs? */
573 /* Check number of properties */
574 if (nprops
< __GLX_MIN_CONFIG_PROPS
|| nprops
> __GLX_MAX_CONFIG_PROPS
)
577 /* Allocate memory for our config structure */
578 modes
= _gl_context_modes_create(nvisuals
, sizeof(__GLcontextModes
));
582 prop_size
= nprops
* __GLX_SIZE_INT32
;
583 if (prop_size
<= sizeof(buf
))
586 props
= Xmalloc(prop_size
);
588 /* Read each config structure and convert it into our format */
590 for (i
= 0; i
< nvisuals
; i
++) {
591 _XRead(dpy
, (char *) props
, prop_size
);
592 /* Older X servers don't send this so we default it here. */
593 m
->drawableType
= GLX_WINDOW_BIT
;
594 __glXInitializeVisualConfigFromTags(m
, nprops
, props
,
595 tagged_only
, GL_TRUE
);
607 getVisualConfigs(Display
* dpy
, __GLXdisplayPrivate
* priv
, int screen
)
609 xGLXGetVisualConfigsReq
*req
;
610 __GLXscreenConfigs
*psc
;
611 xGLXGetVisualConfigsReply reply
;
615 psc
= priv
->screenConfigs
+ screen
;
617 GetReq(GLXGetVisualConfigs
, req
);
618 req
->reqType
= priv
->majorOpcode
;
619 req
->glxCode
= X_GLXGetVisualConfigs
;
620 req
->screen
= screen
;
622 if (!_XReply(dpy
, (xReply
*) & reply
, 0, False
))
625 psc
->visuals
= createConfigsFromProperties(dpy
,
632 return psc
->visuals
!= NULL
;
636 getFBConfigs(Display
* dpy
, __GLXdisplayPrivate
* priv
, int screen
)
638 xGLXGetFBConfigsReq
*fb_req
;
639 xGLXGetFBConfigsSGIXReq
*sgi_req
;
640 xGLXVendorPrivateWithReplyReq
*vpreq
;
641 xGLXGetFBConfigsReply reply
;
642 __GLXscreenConfigs
*psc
;
644 psc
= priv
->screenConfigs
+ screen
;
646 __glXQueryServerString(dpy
, priv
->majorOpcode
, screen
, GLX_EXTENSIONS
);
651 if (atof(priv
->serverGLXversion
) >= 1.3) {
652 GetReq(GLXGetFBConfigs
, fb_req
);
653 fb_req
->reqType
= priv
->majorOpcode
;
654 fb_req
->glxCode
= X_GLXGetFBConfigs
;
655 fb_req
->screen
= screen
;
657 else if (strstr(psc
->serverGLXexts
, "GLX_SGIX_fbconfig") != NULL
) {
658 GetReqExtra(GLXVendorPrivateWithReply
,
659 sz_xGLXGetFBConfigsSGIXReq
+
660 sz_xGLXVendorPrivateWithReplyReq
, vpreq
);
661 sgi_req
= (xGLXGetFBConfigsSGIXReq
*) vpreq
;
662 sgi_req
->reqType
= priv
->majorOpcode
;
663 sgi_req
->glxCode
= X_GLXVendorPrivateWithReply
;
664 sgi_req
->vendorCode
= X_GLXvop_GetFBConfigsSGIX
;
665 sgi_req
->screen
= screen
;
670 if (!_XReply(dpy
, (xReply
*) & reply
, 0, False
))
673 psc
->configs
= createConfigsFromProperties(dpy
,
675 reply
.numAttribs
* 2,
680 return psc
->configs
!= NULL
;
684 ** Allocate the memory for the per screen configs for each screen.
685 ** If that works then fetch the per screen configs data.
688 AllocAndFetchScreenConfigs(Display
* dpy
, __GLXdisplayPrivate
* priv
)
690 __GLXscreenConfigs
*psc
;
694 ** First allocate memory for the array of per screen configs.
696 screens
= ScreenCount(dpy
);
697 psc
= (__GLXscreenConfigs
*) Xmalloc(screens
* sizeof(__GLXscreenConfigs
));
701 memset(psc
, 0, screens
* sizeof(__GLXscreenConfigs
));
702 priv
->screenConfigs
= psc
;
704 priv
->serverGLXversion
=
705 __glXQueryServerString(dpy
, priv
->majorOpcode
, 0, GLX_VERSION
);
706 if (priv
->serverGLXversion
== NULL
) {
707 FreeScreenConfigs(priv
);
711 for (i
= 0; i
< screens
; i
++, psc
++) {
712 getVisualConfigs(dpy
, priv
, i
);
713 getFBConfigs(dpy
, priv
, i
);
715 #ifdef GLX_DIRECT_RENDERING
718 psc
->drawHash
= __glxHashCreate();
719 if (psc
->drawHash
== NULL
)
722 /* Initialize per screen dynamic client GLX extensions */
723 psc
->ext_list_first_time
= GL_TRUE
;
725 if (priv
->dri2Display
)
726 psc
->driScreen
= (*priv
->dri2Display
->createScreen
) (psc
, i
, priv
);
728 if (psc
->driScreen
== NULL
&& priv
->driDisplay
)
729 psc
->driScreen
= (*priv
->driDisplay
->createScreen
) (psc
, i
, priv
);
731 if (psc
->driScreen
== NULL
&& priv
->driswDisplay
)
732 psc
->driScreen
= (*priv
->driswDisplay
->createScreen
) (psc
, i
, priv
);
734 if (psc
->driScreen
== NULL
) {
735 __glxHashDestroy(psc
->drawHash
);
736 psc
->drawHash
= NULL
;
745 ** Initialize the client side extension code.
747 _X_HIDDEN __GLXdisplayPrivate
*
748 __glXInitialize(Display
* dpy
)
750 XExtDisplayInfo
*info
= __glXFindDisplay(dpy
);
751 XExtData
**privList
, *private, *found
;
752 __GLXdisplayPrivate
*dpyPriv
;
753 XEDataObject dataObj
;
755 #ifdef GLX_DIRECT_RENDERING
756 Bool glx_direct
, glx_accel
;
759 /* The one and only long long lock */
762 if (!XextHasExtension(info
)) {
763 /* No GLX extension supported by this server. Oh well. */
765 XMissingExtension(dpy
, __glXExtensionName
);
769 /* See if a display private already exists. If so, return it */
770 dataObj
.display
= dpy
;
771 privList
= XEHeadOfExtensionList(dataObj
);
772 found
= XFindOnExtensionList(privList
, info
->codes
->extension
);
775 return (__GLXdisplayPrivate
*) found
->private_data
;
778 /* See if the versions are compatible */
779 if (!QueryVersion(dpy
, info
->codes
->major_opcode
, &major
, &minor
)) {
780 /* The client and server do not agree on versions. Punt. */
786 ** Allocate memory for all the pieces needed for this buffer.
788 private = (XExtData
*) Xmalloc(sizeof(XExtData
));
793 dpyPriv
= (__GLXdisplayPrivate
*) Xcalloc(1, sizeof(__GLXdisplayPrivate
));
796 Xfree((char *) private);
801 ** Init the display private and then read in the screen config
802 ** structures from the server.
804 dpyPriv
->majorOpcode
= info
->codes
->major_opcode
;
805 dpyPriv
->majorVersion
= major
;
806 dpyPriv
->minorVersion
= minor
;
809 dpyPriv
->serverGLXvendor
= 0x0;
810 dpyPriv
->serverGLXversion
= 0x0;
812 #ifdef GLX_DIRECT_RENDERING
813 glx_direct
= (getenv("LIBGL_ALWAYS_INDIRECT") == NULL
);
814 glx_accel
= (getenv("LIBGL_ALWAYS_SOFTWARE") == NULL
);
817 ** Initialize the direct rendering per display data and functions.
818 ** Note: This _must_ be done before calling any other DRI routines
819 ** (e.g., those called in AllocAndFetchScreenConfigs).
821 if (glx_direct
&& glx_accel
) {
822 dpyPriv
->dri2Display
= dri2CreateDisplay(dpy
);
823 dpyPriv
->driDisplay
= driCreateDisplay(dpy
);
826 dpyPriv
->driswDisplay
= driswCreateDisplay(dpy
);
829 if (!AllocAndFetchScreenConfigs(dpy
, dpyPriv
)) {
831 Xfree((char *) dpyPriv
);
832 Xfree((char *) private);
837 ** Fill in the private structure. This is the actual structure that
838 ** hangs off of the Display structure. Our private structure is
839 ** referred to by this structure. Got that?
841 private->number
= info
->codes
->extension
;
843 private->free_private
= __glXFreeDisplayPrivate
;
844 private->private_data
= (char *) dpyPriv
;
845 XAddToExtensionList(privList
, private);
847 if (dpyPriv
->majorVersion
== 1 && dpyPriv
->minorVersion
>= 1) {
848 __glXClientInfo(dpy
, dpyPriv
->majorOpcode
);
856 ** Setup for sending a GLX command on dpy. Make sure the extension is
857 ** initialized. Try to avoid calling __glXInitialize as its kinda slow.
860 __glXSetupForCommand(Display
* dpy
)
863 __GLXdisplayPrivate
*priv
;
865 /* If this thread has a current context, flush its rendering commands */
866 gc
= __glXGetCurrentContext();
867 if (gc
->currentDpy
) {
868 /* Flush rendering buffer of the current context, if any */
869 (void) __glXFlushRenderBuffer(gc
, gc
->pc
);
871 if (gc
->currentDpy
== dpy
) {
872 /* Use opcode from gc because its right */
873 return gc
->majorOpcode
;
877 ** Have to get info about argument dpy because it might be to
878 ** a different server
883 /* Forced to lookup extension via the slow initialize route */
884 priv
= __glXInitialize(dpy
);
888 return priv
->majorOpcode
;
892 * Flush the drawing command transport buffer.
894 * \param ctx Context whose transport buffer is to be flushed.
895 * \param pc Pointer to first unused buffer location.
898 * Modify this function to use \c ctx->pc instead of the explicit
902 __glXFlushRenderBuffer(__GLXcontext
* ctx
, GLubyte
* pc
)
904 Display
*const dpy
= ctx
->currentDpy
;
906 xcb_connection_t
*c
= XGetXCBConnection(dpy
);
910 const GLint size
= pc
- ctx
->buf
;
912 if ((dpy
!= NULL
) && (size
> 0)) {
914 xcb_glx_render(c
, ctx
->currentContextTag
, size
,
915 (const uint8_t *) ctx
->buf
);
917 /* Send the entire buffer as an X request */
919 GetReq(GLXRender
, req
);
920 req
->reqType
= ctx
->majorOpcode
;
921 req
->glxCode
= X_GLXRender
;
922 req
->contextTag
= ctx
->currentContextTag
;
923 req
->length
+= (size
+ 3) >> 2;
924 _XSend(dpy
, (char *) ctx
->buf
, size
);
930 /* Reset pointer and return it */
937 * Send a portion of a GLXRenderLarge command to the server. The advantage of
938 * this function over \c __glXSendLargeCommand is that callers can use the
939 * data buffer in the GLX context and may be able to avoid allocating an
940 * extra buffer. The disadvantage is the clients will have to do more
941 * GLX protocol work (i.e., calculating \c totalRequests, etc.).
943 * \sa __glXSendLargeCommand
945 * \param gc GLX context
946 * \param requestNumber Which part of the whole command is this? The first
948 * \param totalRequests How many requests will there be?
949 * \param data Command data.
950 * \param dataLen Size, in bytes, of the command data.
953 __glXSendLargeChunk(__GLXcontext
* gc
, GLint requestNumber
,
954 GLint totalRequests
, const GLvoid
* data
, GLint dataLen
)
956 Display
*dpy
= gc
->currentDpy
;
958 xcb_connection_t
*c
= XGetXCBConnection(dpy
);
959 xcb_glx_render_large(c
, gc
->currentContextTag
, requestNumber
,
960 totalRequests
, dataLen
, data
);
962 xGLXRenderLargeReq
*req
;
964 if (requestNumber
== 1) {
968 GetReq(GLXRenderLarge
, req
);
969 req
->reqType
= gc
->majorOpcode
;
970 req
->glxCode
= X_GLXRenderLarge
;
971 req
->contextTag
= gc
->currentContextTag
;
972 req
->length
+= (dataLen
+ 3) >> 2;
973 req
->requestNumber
= requestNumber
;
974 req
->requestTotal
= totalRequests
;
975 req
->dataBytes
= dataLen
;
976 Data(dpy
, data
, dataLen
);
978 if (requestNumber
== totalRequests
) {
987 * Send a command that is too large for the GLXRender protocol request.
989 * Send a large command, one that is too large for some reason to
990 * send using the GLXRender protocol request. One reason to send
991 * a large command is to avoid copying the data.
993 * \param ctx GLX context
994 * \param header Header data.
995 * \param headerLen Size, in bytes, of the header data. It is assumed that
996 * the header data will always be small enough to fit in
997 * a single X protocol packet.
998 * \param data Command data.
999 * \param dataLen Size, in bytes, of the command data.
1002 __glXSendLargeCommand(__GLXcontext
* ctx
,
1003 const GLvoid
* header
, GLint headerLen
,
1004 const GLvoid
* data
, GLint dataLen
)
1007 GLint totalRequests
, requestNumber
;
1010 ** Calculate the maximum amount of data can be stuffed into a single
1011 ** packet. sz_xGLXRenderReq is added because bufSize is the maximum
1012 ** packet size minus sz_xGLXRenderReq.
1014 maxSize
= (ctx
->bufSize
+ sz_xGLXRenderReq
) - sz_xGLXRenderLargeReq
;
1015 totalRequests
= 1 + (dataLen
/ maxSize
);
1016 if (dataLen
% maxSize
)
1020 ** Send all of the command, except the large array, as one request.
1022 assert(headerLen
<= maxSize
);
1023 __glXSendLargeChunk(ctx
, 1, totalRequests
, header
, headerLen
);
1026 ** Send enough requests until the whole array is sent.
1028 for (requestNumber
= 2; requestNumber
<= (totalRequests
- 1);
1030 __glXSendLargeChunk(ctx
, requestNumber
, totalRequests
, data
, maxSize
);
1031 data
= (const GLvoid
*) (((const GLubyte
*) data
) + maxSize
);
1033 assert(dataLen
> 0);
1036 assert(dataLen
<= maxSize
);
1037 __glXSendLargeChunk(ctx
, requestNumber
, totalRequests
, data
, dataLen
);
1040 /************************************************************************/
1044 __glXDumpDrawBuffer(__GLXcontext
* ctx
)
1046 GLubyte
*p
= ctx
->buf
;
1047 GLubyte
*end
= ctx
->pc
;
1048 GLushort opcode
, length
;
1052 opcode
= *((GLushort
*) p
);
1053 length
= *((GLushort
*) (p
+ 2));
1054 printf("%2x: %5d: ", opcode
, length
);
1057 while (length
> 0) {
1058 printf("%08x ", *((unsigned *) p
));